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Finding the Fourth Proportional to 540,420.80, 745,783.63 and 295,405.89

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Solution

The fourth proportional to 540,420.80, 745,783.63 and 295,405.89 is: 407,661.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,420.80 : 745,783.63 = 295,405.89 : x
  2. Step 2: Convert to fraction form
    540,420.80/745,783.63 = 295,405.89/x
  3. Step 3: Cross multiply
    540,420.80x = 745,783.63 × 295,405.89
  4. Step 4: Simplify right side
    540,420.80x = 220,308,876,229.07
  5. Step 5: Solve for x
    x = 220,308,876,229.07/540,420.80
  6. Step 6: Final answer
    x = 407,661.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.